Yanmar BY Series Service Manual page 116

Cylinder Block and Crankshaft
1 – Cylinder Block
2 – Coolant Drain Plug
3 – Seal
4 – Dowel Sleeve
5 – Dowel Sleeve
6 – Piston Cooling Jet
7 – Crankshaft Pulse Generator Wheel
8 – Rear Crankshaft Seal Assembly
9 – Lower Main Bearing Inserts
10 – Lower Main / Thrust Bearing Insert
11 – Oil Deflector
12 – Upper Main Bearing Inserts
13 – Upper Main / Thrust Bearing Insert
14 – Main Bearing Cap Bolt
15 – Dowel Sleeve
16 – Timing Chain Oiler
17 – Seal
18 – Main Bearing Cap
Note: Service procedures for 4BY and 6BY engines are similar, therefore graphics shown will be
representative and might not match the engine being serviced.
BY Service Manual
ENGINE
5-61